Propeller.



PATENTED JULY il, 195

W, B. HAYDEN.

PRPBLLER APPLICATION FILED ooT.1s,19o4.

tlitiririein @trarre Patented July llt, IilOl.

ri n o isi t: i.. i.. n yy SPECIFICATXN forming part of Letters Patentlil'o. *7911,010, dated July a, 1905.

Application lilm] October 13, 1904.. Serial lilo. 229,295.

To rif/ 1li/tom, lil; lim/y volteo/11,.'

lic it known that lV7 'l/ViLiaAM l'l. llarpnn, atitizcn ol. the Unitedkilates, residing' at New York. in the county of New iifork and Stateol' lilew York, have invented new and usel'nllinprovenientsin.lh'opellers ol which the liollowing' is a.spmzilication.

'lhis invention relates to serew-proliiellers; and the ohjeet thereol'is to so ernistruct1 the `propr-.ille 'as to enahle the adjnsting'ol'the propellerdalznles to a less or greater degree ol.' pitch, wlnxrehythe position ol the blades may he adapted to the particular degree el'speed or power desired in the vessel propelled.

rlhe invention lfnrther aims to provide a serew-propeller with aplurality ol :n'ljnstahle ahutinents adapted to engage the hase ol theblaiiles to prevent the tnrl'iiiig' or loosei'iing' ol. the hlades whenin their set positions.

'.lhe invention furtl'ier aims to provide a. sercw-propeller withineansto readily ascertain whether the proper degree olE piteh has heenohtaii'ied when positioning the blades.

'l'he in vention lnrther aims to construct a screwpropeller whieh shallhe simple in its Constrnotion7 strong, durable, and comparativelyinexpensive to manufacture.

i/Vith thc `toregoing' and Vfurther objects in View the inventionconsists of the novel oomhination and arrangennent of parts hereinal termore speeilieally described, illustrated in the aeeonipanying' drawings.and particularly pointed out in the elailns hereunto appendml.

ln describing' the invention in detail relerence is had to theaeconipanying drawings, I"i, i'iiiiii;1:i. part ol this si ieeil'ication, and wherein like reference el iaraetcrs denote eorresponding'parts throughout the several views, and in which YYYY n liignre Yl is asectional elinfation olE a serew rn'opeller eonstruraed in aecrn'daneewith this invention. Fig'. is a view shiiiwinp' one ol' the llattrniedportions oll the huh. liie'. Si is a view Showing; the hase olE thehlade1 and Fig'. 4lv illustrates one ol the hlades in eleva tion.

he lerri ne' to the d rawing's hy rel'erenee characters, l denotes` thepropeller-shatt, to which is lined in any snitahie inanner the huh 2 lorthe blades P. rl`he huh 2 at dillierent points titi on its peri|' heryis llattened, as at fl. As shown, the periphery ol thehnh 2 isllatlorunl at three points; hut the nun'iher thercol can he inereased ordiminished, according' to the nninher ot hlades Ei employed. lhc huh 2,apiiroxinuttely centrally olI each ol the [lattencd portions Jr, isprovided with a protuheranee 5. having' a screw-threaile(l openingIterminating' in a screw-tln'eaded reeess in the huh.Thescri'nv-tlireaded opening'ot the protuhcranee and the recess in whichsaid opening' terminates lornis a socket o, the liuiietioii ol whichwill he hereinafter referred to. '.lhe huh 2 is further provided at eachol the tlattened portions fflwithaseries` ol screw-threzuh ed reeessesT, lour in ninnber. said recesses diei'iosed around the said protnIieranrfe and arranged with respect to each other suhstantially in thetorni ol. a square. The function olE thc recesses T wi ll he hereinafterrelcrred to.

lCaeh ol the hhulos 3 is curved at its outer end, as at t5, theInnetiiin'i ol which is to drive the water directly att and preventwaste ol' power hy Centrifugal aetion. `laeh ol the blades 3 at itsinner end terminates in a hase i) ol such iliainctcr as to extend overthe recesses 7, and Centrally ol the under laee et the base E) aserew-tln'eaded connecting'incinher ll) is provided, said Ineinhcr l()heine` an inte gral part ol'l the hase il and adapted to engage in oneol the sockets t l'or detaclmhly een nectine' the hladc with the huh.

'.llhe ailjnstahlc-ahutnients, which are adapted to engage the hase oithe blades 3 to prevent the turning' or loosening' ol the hlades when intheir set positions, insist olA afieries ol. headed iani-screws l l,operating' in the re eesscs 7, there heini; tour fain-screws 'l 1 Foreach hlade. 'l`he lnanller in whieh the srrews operate to retain theblades in their set positions will he hereinafter relerred to.

.lhe means lor aaeei'tainine` the Imsitionine; oll the liladea to thedesired piteh eonsisls in providing' each olE the llatteinfd portions'lol' the huh .2 I etweena pair ol. thejaan-screws ll with a pluralityol recessei; 12, which torni what may he termed a l pitcl'i-scale," eachrem eess iinlieatine' a dill'erent degree of pitcln and cmiiperatingrwith said recesses 12 is a screw-tlireaded openinrg;` ISS in the haseofeaeh IOO of the blades. A removable pin 14 extends through the opening'13 and is adapted to en- `gage in the recesses 12, so as to indicatethat the proper degree of pitch has been obtainedslthat is to say, whenthe pin let finds a seat in one of the recesses l2 it will be indicatedto the person adjusting the blade that a certain pitch has beenobtained. The recesses 12 may be provided with suitable degree-marks, ifdesired.

The propeller is set up in the following` manner: The connecting; member10 of each blade is inserted in its respective socket fi; but before theconnecting' member is posi tioned the jam-screws ll are placed in theirrespective recesses 7. As the setting; up of all of the blades 5l is thesame, the setting,` up of one only will be referred to. `Vhcn theconnecting' member 10 is screwed into the socket (S, the bladel isturned until the opening' 13 in the base of the blade registers with oneof the recesses 1Q, that recess which indicates the desired pitch forthe blade. After the opening' 13 registers with one of the recesses 12the pin ist is screwed home, so to retain the blade at the pitchdesired. lVhen the connecting member 'lO is inserted in the socket 6,itis not screwed tl'ierein until the base of the blade engages theprotuberz'ince-L; but the base extends slightly above saidprotulgierance,'or, in other words, does not engage the protuberance. Asthe desired pitch has been obtained in the manner hereinbefore setforth, the jam-screws Yl1 are moved outwardly, so as to have their headsabut against the under face of' the base, which action will be asomewhat pulling'onethatis, pulling'ag'ainst the threads of theconnecting member and the threads of the sockets G and suchl'iositioninf,T of the jam-screws that is to say, firmly abutting'against the underneath face of the base of the bladc-swill prevent theturning` or loosening of the blade, as the blade is what may be termed"lixedly secured in position at the proper pitch desired. The heads ofthe jamsscrews also act as bearings for the base of the blade. lf it bedesired to change the pitch of the blade, the jam-screws 171 areloosened, the. pin 14C removed Yfrom the opening and the recess intowhich it extends, and the blade4 shifted until the opening' lilregisters with another of ,the recesses l2. The blade is then secured inposition in the same manner as heretofore pointed out.

lit is thought the many advantages of a screw -propeller col'istructedin accordance with the foregoingv description, taken in connection withthe accompanying drawings, can be thoroughly umlerstood, and it will,furthermore, be evident that changes, variations, and modifications canbe resorted to without departing' from the spirit of' the invention orsacrificing` any of its ad vantag'cs, and I therefore do not wish torestrict myself to the dctails of construction as herein set forth, but

reserve the right to make such changes, variations, and modifications ascome broadly with in the scope of the protection prayed.

Havingv thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, isM

l. A screw-propellerinvolving' a hub, a plurality of adjustable bladescarried by the hub, and a plurality of adjustable abutnients interposedbetween the blades and the hub and independent of the blades for lixedlysecuring' the blades in their adjusted positions.

2. A screw-propeller involving ahub, a plurality of blades adjustable tovarying' pitch, means for i'lctermining the pitch desired, and aplurality ofadjustable abutmenl's interposed between the blades and thehub for securii'ig' the blades to the pitch desired.

3. Ascrew-propellerinvolving'ahubhaving a phirality of flattenedportions, each of said flattened portions provided with a screwthreadedsocket, a plurality of' blades adjustable fo varying` pitch, eachprovided with a connecting' member adapted to engage in the saidsockets, and a plurality of' adjustable abutmen ts engaging in saidflattened portions and abutting' against the blades Yfor securing` theblades in position at the desired pitch.

4. A serew-propeller invol ving a hub having' a plurality of liatteuedliortions` each of said flattened portions provided with a screwthreadedsocket, a plurality of blades adjustable to varying' pitch, eachprovided with a connecting' member adapted to engage in the saidsockets, a plurality of adjustali le abutments engaging in saidflattened portions and abutting' against the blades for securing' theblades in position at the desired pitch, and means for .letermining' thepitch desired.

5. A screw-propeller involving' a plurality of blades adjustable tovarying pitch, and a plurality of adjustable abutments independent oftheblades for retaining,r said blades in the positions set.

G. A screw-propeller involving' a plurality of blades adjustable tovarying' pitch and cach having` a curved extremity, and a plurality ofadjustable abutments independent of the blades for retaining' saidblades in the positions set.

7. A screw-propeller involvingI a plurality of' blades :uljustable tovarying' pitch, and a jiilurality of jam-screws independent of andadapted to retain said blades in their adjusted positions.

S. A screw-propeller involving' a plurality ol blades adjustable tovarying' pitch and each provided with a curved extremity, and aplurality of jam-screws independent of and abutting' against said bladesfor retaining' them in their adjusted positions.

9. A screw-propeller involving' a hub provided with a plurality ofsockets, a plurality of adjustable blades having' connecting' membersadapted to engage in said sockets, and a IOO TIO

ISO

plurality oi jam-screws engaging1 in the hub, abutting' against andindependent oi the blades for retaining them in their adjustedpositions.

l0. [t screw-propeller involving` a hub provided with a plurality ofsockets, a plurality ol" :uljustable blades having;l curved extremitie.'and connectingl members, said members adapted to engage in said SocketsFor eonneeting;l the blades with the hubq and a plurality ol jani-sermreengaging in the hubq alnitting' againet and independent oli the bladeslor retaining' them in their adjusted positions.

fl lo. t sorewqjiropeller in voli/ing' a hub pro vided with a pluralityol' sockets, a plurality oli' :uljustable blades having' Curvedextremities and connecting' members, said members :ulapted to engage insaid soekets Ior eonneeting,` the blades with the hub`I a plurality olfam-serews engaging' inthe huband abutting' against the blades forretaining' them in their :uljusted positions, said hub provided withmeans for indieatii'lg' the :uljustment lor the blades, and meansextending' through the blad is and extending' in the means provided tiltin the hub for setting' the blades to the desired adj ustment.

1Q. A screw-propeller involving' a hub provided with a plurality olsockets, a plurality of adjustaliile blades having eurved extremitiesand connecting` members, said members adapted to engage in said socketsFor eonneeting' the blades; with the hub, a plurality oili jan'i-serewsengaging' in the hub and abutting against the blades or retainingl themin their adjusted positions, said hub ijn'ovided with means for indieating' the desired adjustment lor the blades, eaeh ot said blades'provided with an openingl adapted to register with said means, and pinsextending'through said openings and engaging; iu said means For setting`the blades at the desired adjustment.

ln testimony whereof l have hereunto eet my hand in presence ol twosubscribing' \\'itnesses.

Wll'llil /li Nl li. HA YDlGN. lVitnesses:

Uniti-:Lies lil. l'lAYnnN,

Ui Tiri )N ALL MN l'l AYD EN.

